This particular lawsuit —filed Monday by the Seattle law firm Hagens Berman— isn’t the first fuel economy-based lawsuit to be leveled at the Blue Oval for theRanger. Other suits have made similar claims, and the Department of Justice is also investigating if there is a criminal case to be answered.

The new lawsuit is seeking damages in the amount of $1.2 billion, according tothe Detroit Free Press, alleging that the misrepresented mileage could have cost owners somewhere in the neighborhood of $2,000 per year in additional fuel costs compared to what was advertised.

The misrepresentation likely stems from a 2017 change by the EPA in the way that emissions tests are administered. Specifically, it involves a change in the way that the “road load” was able to be calculated. The road load is a resistance figure used on a dynamometer to simulate the effects of tires’ rolling resistance, wind resistance and the loss of energy through a vehicle’s drivetrain.

“Ford’s lies about the F-150 are masking the truth: consumers are paying far more for these trucks than meets the eye,” said Steve Berman, a managing partner at Hagens Berman.